Silverquick, you're wrong. It's an endgame raid that is still done, unsynced, every week for Khloe stickers, glamor, and some people do it for fun, challenge, and getting other peoples' bonuses.

Although it was made available for duty finder queue, it was never done via duty finder when it was current content. People always queued in after grouping up either as a static or via PF first.

Similarly, Alex Savage, although current content, has people going in after getting a full premade. Even though the loot is unlocked, you still won't get a duty finder queue for Alex Savage to pop.